CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 324 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.True or false: .card is a class selector. (a) False (b) True
2. 2.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
3. 3.True or false: #end is an id selector. (a) False (b) True
4. 4.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) .intro (b) div (c) #big (d) #main
6. 6.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h2 class="red"> (c) <h1 id="note"> (d) <h1 class="big">
7. 7.🎯 Which CSS selector matches this element?
   <p class="red" id="top">Hello</p> (a) #top (b) #intro (c) .top (d) .box
8. 8.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="box" id="hero">Hello</h1> (a) #box (b) h1 (c) .star (d) .hero
10. 10.🎯 Can many elements share the same class? (a) Yes (b) No
11. 11.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 class="intro"> (c) <h1 id="main"> (d) <h2 class="big">
12. 12.🎯 Which element does the selector #logo style? (a) <li id="end"> (b) <div class="star"> (c) <li id="logo"> (d) <li class="logo">
13. 13.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="intro"> (c) <h1 class="box"> (d) <span class="box">
14. 14.🎯 Which element does the selector #end style? (a) <span class="box"> (b) <div id="hero"> (c) <div class="end"> (d) <div id="end">
15. 15.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #top (b) .hero (c) #red (d) li
16. 16.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
17. 17.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
18. 18.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <li class="big"> (c) <h2 class="note"> (d) <h2 class="menu">
19. 19.True or false: .menu is an id selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) span (b) #big (c) div (d) .top
21. 21.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <li class="note"> (c) <h2 class="star"> (d) <h2 class="menu">
22. 22.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
24. 24.🎯 Which element does the selector #hero style? (a) <p class="menu"> (b) <span id="hero"> (c) <span class="hero"> (d) <span id="top">
25. 25.True or false: .big is a class selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) #logo (b) li (c) .menu (d) #star
27. 27.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="menu"> (c) <p id="star"> (d) <p class="star">
28. 28.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .red (b) #intro (c) .big (d) .top
29. 29.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) .box (b) .hero (c) #hero (d) p
31. 31.True or false: h1 is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) p (b) span (c) #intro (d) .top
33. 33.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h1 class="star"> (c) <li class="star"> (d) <h2>
34. 34.True or false: body is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) .box (b) .intro (c) #box (d) #main
36. 36.True or false: #hero is an id selector. (a) True (b) False
37. 37.True or false: #main is an element selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) .top (b) #intro (c) #star (d) #top
39. 39.True or false: .card is an element selector. (a) True (b) False
40. 40.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector

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